diff options
Diffstat (limited to 'meta/recipes-core/busybox/busybox/CVE-2016-6301.patch')
-rw-r--r-- | meta/recipes-core/busybox/busybox/CVE-2016-6301.patch | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/meta/recipes-core/busybox/busybox/CVE-2016-6301.patch b/meta/recipes-core/busybox/busybox/CVE-2016-6301.patch deleted file mode 100644 index 851bc20f79..0000000000 --- a/meta/recipes-core/busybox/busybox/CVE-2016-6301.patch +++ /dev/null | |||
@@ -1,37 +0,0 @@ | |||
1 | busybox1.24.1: Fix CVE-2016-6301 | ||
2 | |||
3 | [No upstream tracking] -- https://bugzilla.redhat.com/show_bug.cgi?id=1363710 | ||
4 | |||
5 | ntpd: NTP server denial of service flaw | ||
6 | |||
7 | The busybox NTP implementation doesn't check the NTP mode of packets | ||
8 | received on the server port and responds to any packet with the right | ||
9 | size. This includes responses from another NTP server. An attacker can | ||
10 | send a packet with a spoofed source address in order to create an | ||
11 | infinite loop of responses between two busybox NTP servers. Adding | ||
12 | more packets to the loop increases the traffic between the servers | ||
13 | until one of them has a fully loaded CPU and/or network. | ||
14 | |||
15 | Upstream-Status: Backport [https://git.busybox.net/busybox/commit/?id=150dc7a2b483b8338a3e185c478b4b23ee884e71] | ||
16 | CVE: CVE-2016-6301 | ||
17 | Signed-off-by: Andrej Valek <andrej.valek@siemens.com> | ||
18 | Signed-off-by: Pascal Bach <pascal.bach@siemens.com> | ||
19 | |||
20 | diff --git a/networking/ntpd.c b/networking/ntpd.c | ||
21 | index 9732c9b..0f6a55f 100644 | ||
22 | --- a/networking/ntpd.c | ||
23 | +++ b/networking/ntpd.c | ||
24 | @@ -1985,6 +1985,13 @@ recv_and_process_client_pkt(void /*int fd*/) | ||
25 | goto bail; | ||
26 | } | ||
27 | |||
28 | + /* Respond only to client and symmetric active packets */ | ||
29 | + if ((msg.m_status & MODE_MASK) != MODE_CLIENT | ||
30 | + && (msg.m_status & MODE_MASK) != MODE_SYM_ACT | ||
31 | + ) { | ||
32 | + goto bail; | ||
33 | + } | ||
34 | + | ||
35 | query_status = msg.m_status; | ||
36 | query_xmttime = msg.m_xmttime; | ||
37 | |||